有载分接开关真空管操动机构力学特性动态仿真  

Dynamic simulation of mechanical characteristics of vacuum tube operating mechanism of on load tap changer

作　　者：顾传宇 严英杰[2] 刘亚东[2] 邓军[3] 朱强[4] 江秀臣[2] GU Chuanyu;YAN Yingjie;LIU Yadong;DENG Jun;ZHU Qiang;JIANG Xiuchen(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;China Southern Power Grid Ultra High Voltage Power Transmission Company,Guangzhou 510000,China;Shanghai Huaming Electric Power Equipment Manufacturing Co.,Ltd.,Shanghai 200333,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]上海交通大学电气工程系,上海200240 [3]中国南方电网有限责任公司超高压输电公司,广州510000 [4]上海华明电力设备制造有限公司,上海200333

出　　处：《上海理工大学学报》2024年第5期475-483,共9页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(52207166)。

摘　　要：真空管操动机构是换流变有载分接开关的核心部件,其机械结构较为复杂,且因其频繁操作常导致机械机构发生塑性形变与损伤,从而发生换流变故障。研究有载分接开关真空管操动机构力学特性动态仿真能够弥补传统测试手段无法直观展示应力分布的不足,并为真空管操动机构的设计与改进提供理论基础。首先,在ANSYS中建立了基于隐式非线性动力学的真空管操动机构瞬态动力学仿真模型,采用Von Mises屈服准则与等向硬化模型计算模型等效应力;其次通过有限元分析了操动机构整体的应力分布情况;最后针对性地分析了凸转盘、凸杆、支撑机构和真空管的应力分布情况,从而便于深入分析分接开关在各种工况下的工作原理,并有助于根据应力分布情况有效改进操动机构机械结构,并在设计阶段预见并避免可能的故障模式。The vacuum tube operating mechanism is the core component of the on load tap changer of the converter transformer.Its mechanical structure is relatively complex,and frequent operation often leads to plastic deformation and damage of the mechanical mechanism,resulting in converter transformer failure.Studying the dynamic simulation of the mechanical characteristics of the vacuum tube operating mechanism of the on load tap changer can compensate for the shortcomings of traditional testing methods that cannot intuitively display stress distribution,and provide a theoretical basis for the design and improvement of vacuum tube operating mechanisms.Firstly,a transient dynamic simulation model of the vacuum tube operating mechanism based on implicit nonlinear dynamics was established in ANSYS.The Von Mises yield criterion and isotropic hardening model were used to calculate the equivalent stress of the model.Secondly,the stress distribution of the operating mechanism as a whole was analyzed by finite element method.Finally,the stress distribution of the convex turntable,convex rod,support mechanism,and vacuum tube was analyzed in a targeted manner,which facilitates in-depth analysis of the working principle of the tap changer under various working conditions and helps to effectively improve the mechanical structure of the operating mechanism based on the stress distribution,and to predict and avoid possible failure modes in the design stage.

关 键 词：真空管操动机构 应力 有限元分析 瞬态动力学 

分 类 号：TM403.4[电气工程—电器]